Glass panels give a sleek finish to bathroom walls and baths. With no grout lines and a subtle gleam they boost light around the room. Plus, they come in all moods from calming muted hues to wake-you-up brights.
These are the inexpensive 3D wall panels to which I referred. They are paintable and depth and texture. Was thinking on FP wall, possibly on wall at end of upper stairwell, above kitchen cabinets. There are a ton of style options.